PP Presentation
Anthony Portell
Trident Electrical Systems
PP Presentation
RAID Has Fundamentally Changed Information Services
What’s Wrong with Separate Disks?
What is RAID?... the origin
Why RAID?
The Storage Environment In 1987
Basic Concepts--Shadowing
Basic Concepts--Striping
Basic Concepts-- Striping for High Transfer Rate
Basic Concepts-- Striping for High I/O Rate
Basic Concepts-- Striping plus Shadowing
Striping Shadowsets vs Shadowing Stripesets
Basic Concepts-- Striping plus Parity
RAID is also ...flavors and new names
RAID is also ...
RAID Levels Recognized by the RAID Advisory Board
RAID 0+1
A Note About Chunk Size
The Storage Environment Has Changed
Why Consider RAID Today ?
Understand the Compromise
RAID Trade-offs Cost and Availability
RAID Performance Comparison VMS I/O Performance Summary
(modeled)
What are the solutions?
What are the solutions?
What are the solutions?
What are the solutions?
What are the solutions?
These are the solutions mapped out
RAID Implementations
Host-Based RAID
StorageWorks RAID Software for OpenVMS -- Benefits
StorageWorks RAID Software for OpenVMS--Array Configurations
StorageWorks RAID Software for OpenVMS--Array Configurations
Controller-Based RAID
Which RAID is best? It all depends...
Examples of RAID Applications
Summary
Distributed
File Systems
was created by: Anthony
Portell . For a graduate level project for
ECE 578 "Advanced
Operating Systems"
at University of Michigan.
Created on 04.22.97. All the
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